JPH0535501B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to improvements in tape players, sometimes automatic reciprocating tape players mounted on automobiles.

[Prior Art] The configuration and operation of a conventional automatic reciprocating recording and reproducing machine (tape player) will be described with reference to the drawings.

FIG. 16 is a plan view showing the state of a conventional tape player during playback. In FIG. 16, a pair of pinch rollers 3 and 3' are arranged on a main base 1 with four magnetic heads 2 sandwiched between them. In addition, a movable board 4 is installed so as to be moved away from the main base 1.
is linked to main base 1. On the moving board 4 are a motor 5, a pair of capstans 6, 6' having a flywheel coaxially, a reel stand 7,
7' and large diameter parts 8, 8' of capstans 6, 6'
Idlers 9, 9' are interposed between the reel stands 7, 7' and the reel stands 7, 7', respectively. When the tape magazine 11 is inserted along the magazine guides 10, 10' on the main base 1, the front end surface of the tape magazine 11 is inserted into the movable board 4.
The pilot pins 12, 12' are pushed and the movable board 4 floats. As a result, the magnetic head 2 engages with the tape in the tape magazine 11, and at the same time the capstans 6, 6' and the reel shafts 13, 1
3' enters into the tape magazine 11, and one of the capstans 6, 6' engages with one of the pinch rollers 3, 3' with the tape sandwiched between them. Further, the reel shafts 13, 13' engage with the tape winding frame (reel hub) in the tape magazine 11,
In addition, one of the idlers 9, 9' connects one of the large diameter parts 8, 8' of the capstan and one of the reel stands 7, 7', thereby automatically starting tape playback in conjunction with the insertion of the tape magazine. configured to do so. This playback state is locked when the set pin 14 of the movable board 4 engages with the hook portion 16 of the first set lever 15 pivotally mounted on the main base 1. Such a configuration is well known as the so-called Stahl system. Now, in FIG. 16, when the magnetic tape runs to the left, it is called a forward direction (F direction), and when it runs to the right, it is called a reverse direction (R direction). Therefore, regarding the tape drive mechanism, the part involved in forward running is called a forward drive system, and the part involved in reverse running is called a reverse drive system. 16th
In the figure, the forward direction drive system 17 includes the pinch roller 3 on the left side of the figure, the capstan 6', the reel stand 7, and the idler 9, and the reverse direction drive system 1
7' is the right pinch roller 3', capstan 6',
It includes a reel stand 7' and an idler 9'. Switching between the forward drive system 17 and the reverse drive system 17' is performed as follows.

FIG. 17 is a diagram showing a mode of switching between the forward direction drive system and the reverse direction drive system. In FIG. 17, a control plate 18 is disposed on the main base 1 so as to be slidable laterally. The control plate 18 is linked to the reversing electromagnetic plunger 19 (see FIG. 16) so that it always slides alternately left and right each time it is operated. One side edge of the control plate 18 has pinch roller control cam portions 20, 20', to which operating pins 21, 21' of the pinch rollers 3, 3' are linked, respectively. Idler control cam portions 22 and 22' are provided on the other side edge of the control plate 18, and actuating pins 23 and 2 of the idlers 9 and 9' are connected to the idler control cam portions 22 and 22', respectively.
3' is linked. The idlers 9, 9' are supported by swing levers 24, 24', respectively, and a spring 25, 25' is connected to one end of each of the swing levers 24, 24'. ' are the large diameter parts 8, 8' of the capstan and the reel stand 7, respectively.
7'. The other end is a rotating arm 2 whose base end is pivotally connected to the movable board 4.
The above-mentioned operating pins 2 are attached to the free ends of 6 and 26', respectively.
It is pivoted at 3 and 23'. These rotating arms 26, 26' are biased by springs 27, 27' in a direction to separate the idlers 9, 9' from the reel stands 7, 7', respectively, but when stopped, the operating pins 23, 2
3' is separated from the control plate 18, these pivot arms 26, 26' move the large diameter portions 28, 2 of the pilot pins 12, 12' against the springs 27, 27'.
It is stopped by 8'.

According to this configuration, when the control plate 18 is in the left-hand position as shown in FIG. The actuating pin 23' is removed from the position '. This results in
The pinch roller 3' and the idler 9' are separated from the capstan 6' and the reel stand 7', respectively, and the reversal direction drive diameter 17' becomes inactive. On the other hand, the operating pin 21 is connected to the left pinch roller control cam section 20.
The pinch roller 3
The idler 9 is pressed against the capstan 6 and the reel stand 7, respectively, and the forward drive diameter 17 is brought into operation. This allows tape playback in the forward direction.

The reversing magnetic plunger 19 operates and the control plate 1
8 slides to the right, contrary to the above, the first
As shown in FIG. 9, the forward drive radius 17 is inactive and the reverse drive radius 17' is activated, thereby making it possible to play the tape in the reverse direction. In this case, as described above, the control plate 18 slides alternately left and right each time the reversing magneto-electromagnetic rungear 19 operates. A belt is placed between the motor 5 and the flywheels 29, 29' so that the flywheels 29, 29' rotate in opposite directions.

Next, the operation during high-speed running will be explained. 1st
In the tape player shown in FIG. 6, the reproducing running direction of the tape drive mechanism is detected, and the reel stands 7, 7 on either side of the forward direction drive system 17 and the reverse direction drive system 17' as shown in FIG. A high-speed running selection device 30 is provided for selecting whether to give high-speed rotation to '. This selection device 30 is connected to the control board 18
first and second cam portions 31 integrally formed with the
31', and a cam follower 33. The cam follower 33 is connected to the movable base plate 4 by the support shaft 3.
It is implanted at one end of the rotating plate 35 which is pivotally supported at 4. This rotating plate 35 has a substantially U-shaped retaining spring 3.
6 is fixed, and a high-speed intermediate wheel 37 is held between the free ends of this retaining spring 36. As best shown in FIG. 21, this intermediate wheel 37 includes a first transmission wheel 39 and a flywheel 2 located at the upper and lower ends of the shaft 38, respectively, in the common vicinity of the reel combinations 7, 7'.
A second transmission wheel 40 located in the common vicinity of 9 and 29'
are fixed, and a receiving groove 4 is formed between them.
1 and 42 are loosely fitted, the free end of the protective spring 36 is fitted into one receiving groove 41, and the edge of the guide window 44 of the moving board 4 is fitted into the other receiving groove 42. .

In the above-mentioned configuration, during forward playback, the control plate 18 slides to the left as shown in FIG.
The cam portion 31 is in a cooperating reference state with the cam follower 33. In this state, the operating lever 45 is rotated clockwise as shown in FIG. 22. This will now be referred to as the first external operation. This operating lever 45
is arranged so that it can be pushed into the main base 1 and freely moved and rotated by fitting its elongated hole 46 into a support shaft 47, and its bent protrusion 4
An operating lever 51, which is pivotally connected to the main base 1 by a support shaft 50, is held between 8 and 49. A release pin 55 is implanted at the tip of the operating lever 51 so as to face the cam portions 53 and 54 of the first and second set levers 15 and 52, which are pivotally connected to the main base 1. When the above-mentioned first external operation is performed on the operating lever 45, as shown in FIG. The cam portion 53 of the first set lever 15 is pushed by the release pin 55, which rotates to disengage the hook portion 16 from the set pin 14. As a result, the movable base plate 4 attempts to move to the stop position due to the bias of the return spring, but in the middle of the movement, the set pin 14 engages with the hook portion 56 of the second set lever 52, thereby causing the movable base plate 4 to move to the stop position. is locked in an intermediate position. At this intermediate position, the tape magazine 11 is withdrawn to a position where the engagement between the tape and the magnetic head 2 is released, and the capstan 6,
6' is removed from the pinch rollers 3, 3', and idlers 9, 9' are removed from the reel combinations 7, 7', respectively, to release the tape constant speed winding function and enable high-speed running.

As described above, when the movable substrate 4 is shifted to the intermediate position by the first external operation, the aforementioned selection device 30 is operated in conjunction with this, regardless of whether the tape playback direction is the forward direction or the reverse direction. It is always one of fast forwarding and rewinding, but in this case it is constructed so that rewinding is always performed, and its operation is as described below.

During forward playback, as shown in Figure 17,
The control plate 18 slides to the left to activate the forward drive system 17. The detection cam 32 is therefore ready with its first cam portion 31 to cooperate with the cam follower 33 . When the transition board 4 is shifted to the intermediate position as described above, the cam follower 33 rides on the first cam portion 31, thereby causing the rotating plate 35 to rotate counterclockwise as shown in FIG. and middle wheel 3
The first and second transmission wheels 39 and 40 of No. 7 are in pressure contact with the reel stand 7' and the flywheel 29' included in the reverse direction drive system 17', respectively, and the flywheel 2
The rotation of the tape 9' is transmitted to the reel stand 7' via the intermediate wheel 37, and the reel stand 7' is rotated in reverse at high speed to rapidly rewind the tape from the forward direction to the reverse direction.

On the other hand, when reproducing in the reverse direction, as shown in FIG. 19, the control plate 18 slides rightward to operate the reverse direction drive system 17'. In this case, the detection cam 32 has its second cam portion 31
is ready to cooperate with the cam follower 33. Therefore, in this case, when the movable base plate 4 is shifted to the intermediate position, the rotating plate 35 is rotated clockwise as shown in FIG. 20 in order for the cam follower 33 to ride on the second cam portion 31'. The first and second transmission wheels 39 and 40 of the intermediate wheel 37 are connected to the forward drive system 1, respectively.
Reel stand 7 and flywheel 2 included in 7
9, the reel stand 7 is rotated forward at high speed, and the tape is rapidly rewound in the forward direction rather than in the reverse direction.

Next, the tape fast forwarding operation will be explained. Similarly to when the operating lever 45 is rotated in the first external operation, that is, clockwise, the operating lever 51 is also rotated clockwise when the operating lever 45 is rotated counterclockwise. That is, the operating lever 51 is held between the projecting pieces 48 and 49 of the operating lever 45, and when the operating lever 45 further rotates counterclockwise,
Press the operation lever 4 so that the changeover switch S1 is activated.
5 and the changeover switch S fixed to the main base 1
1 is connected to the main base 1 by a lever 57, and a detection switch S2 as shown in FIG. 24 is arranged on the side surface of the main base 1. A pressing pin 58 is provided protruding from the side surface of the movable board 4 so that the detection switch S2 is activated once. As shown in FIG. 25, these switches S1 and S2 are arranged in series with the energizing circuit of the reversing electromagnetic plunger 19, and in parallel with the series circuit, a tape end detector 59 is arranged.

In such a configuration, when the operating lever 45 is rotated counterclockwise as shown in FIG. 23, the protruding piece 49 pushes the operating lever 51, and this operating lever 51 Rotates clockwise in the same way as during operation. This counterclockwise operation of the operating lever 45 will now be referred to as a second external operation. Due to this rotation of the operating lever 51, the movable board 4 is shifted from the reproduction position to an intermediate position,
The selection device 30 operates in conjunction with this, but in the case of this second external operation, a fast forward function is performed instead of the rewind function described above. Its operation is as follows.

As shown in FIG. 23, the operating lever 45 is
When the switch S1 is rotated counterclockwise, the contact a of the changeover switch S1 is brought into contact with the contact c rather than the contact b. As a result, when the movable board 4 is shifted from the playback position to an intermediate position by this second external operation, the detection switch S is activated by the pressing pin 58 during the shift.
When the second sectioning rod 60 is pushed to the closed state, the reversing electromagnetic plunger 19 operates once and the control plate 18 slides. As a result, the reproduction traveling direction of the tape drive mechanism is once reversed. For this purpose, the selection device 30 detects the direction opposite to the running direction during performance.

If the running direction during playback is the forward direction,
The control plate 18 has been slid to the left as shown in FIG. 17, and its detection cam 32 has its first cam portion 31 ready for cooperation with the cam follower 33. However, when the second external operation is performed, the control plate 18 is moved to the first position by the reversing electromagnetic plunger 19, as described above.
As shown in FIG. 9, the second cam portion 31' is slid to the right of the reverse running position, so that the second cam portion 31' is ready to cooperate with the cam follower 33. Therefore, when the movable substrate 4 is moved to the intermediate position, the rotating plate 35 rotates clockwise as shown in FIG. 20.
For this purpose, the first and second transmission wheels 39 and 40 of the intermediate wheel 37 are in pressure contact with the reel stand 7 and the flywheel 29 included in the forward drive system 17, respectively, and the tape is rotated by rotating the reel stand 7 at high speed. It runs at high speed (fast forward) in the same direction as the running direction (forward direction) during playback.

On the other hand, when the traveling direction during playback is the reverse direction, the control plate 18 slides to the right as shown in FIG.
1' is ready to cooperate with the cam follower 33. At this time, when the second external operation is performed, the reversing electromagnetic plunger 19 causes the control plate 18 to slide to the left of the forward running position as shown in FIG. is ready to cooperate with the cam follower 33, so that upon displacement of the moving base plate 4 to the intermediate position, the pivot plate 35 pivots counterclockwise as shown in FIG. For this purpose, the first and second transmission wheels 39 of the intermediate wheel 37,
40 are in pressure contact with the reel stand 7' and flywheel 29' included in the reversing direction drive system 17', and by rotating the reel stand 7' at high speed, the tape is rotated in the same direction as the running direction (reverse direction) during playback. To run at high speed, that is, to fast forward.

[Problems to be Solved by the Invention] Conventional automatic reciprocating tape players are constructed as described above, and perform playback, fast forwarding, rewinding, etc. of a magnetic tape.

However, in recent years, high-performance tape players equipped with microcomputers and the like have become necessary even in magnetic recording/reproducing machines (tape players) installed in automobiles. Accordingly, there are demands for tape players to be smaller in size and to have improved performance such as wah. However, in the conventional configuration, a magnetic head is provided between the motor serving as the drive source and the reel stand for tape winding, and the magnetic head is connected from the motor to the flywheel so that the flywheels rotate in opposite directions. It was necessary to attach a belt to the device, and it was difficult to make the structure of the device simple and compact. Furthermore, in order to transmit the rotational force to the reel stand, first and second transmission wheels that rotate simultaneously about the same rotating shaft are used to transmit the rotational force from the flywheel to the reel stand. Therefore, rotational distortion of the reel stand (reel rest) is directly transmitted to the flywheel, and vice versa, causing problems in wah performance and the like.

Conversely, since the rotation of the flywheel, which rotates in response to the rotational force from the motor, is transmitted to the reel stand, the rotational force is transmitted to the reel stand even when the tape ends. In some cases, a large torque was applied to the motor, causing damage to various parts such as seizure of the motor.

In addition, a complicated mechanism is required to switch the tape running direction and running speed, and the control part cannot be configured in a centralized manner. It was difficult to configure.

It is therefore an object of the present invention to eliminate the above-mentioned drawbacks and to provide a small, compact and high performance tape player.

[Means for Solving the Problems] The tape player of the present invention has a flywheel that is rotated by a drive source and suppresses uneven rotation of the drive source, and the tape player has a flywheel that is rotated by a drive source and suppresses uneven rotation of the drive source, and the tape player is rotated by a drive source and has a flywheel that suppresses uneven rotation of the drive source. The tape player includes a reel rest device having a reel rest shaft for winding the tape-shaped recording medium and a reel rest drive device for driving the reel rest shaft, A drive device is provided independently of the flywheel,
a first rotating body having a disc-shaped portion for transmitting the driving force of the drive source; and a second rotating body that rotates together with the first rotating body and applies a first rotating force to the reel rest device. a rotating body, the first rotating body is located between the second rotating body and the disk-shaped portion, rotates coaxially with the first rotating body, and has a larger diameter than the second rotating body; a third which provides a second rotational force for fast forwarding or rewinding that is different from the rotational force;
a rotating body, and a side surface of the disc-shaped part and the third
between a friction body disposed on a surface facing the rotating body and transmitting the rotational force of the first rotating body to the third rotating body, and the second rotating body and the third rotating body; a slip mechanism consisting of an elastic body disposed;
a fourth rotary body to which the rotational force of the second rotary body is transmitted and which can apply the rotational force to the reel rest shaft; and a fourth rotary body to which the rotational force of the third rotary body is transmitted and which can apply the rotational force to the reel rest shaft. and a rotation axis of the fourth rotation body, which itself rotates in a plane about the rotation axis of the first rotation body to rotate the rotation axis of the fourth rotation body. a first control plate that moves the rotational axis in a plane and controls transmission of rotational force to the reel rest axis; and a rotational axis of the fifth rotating body; a second control plate that rotates in a plane about the rotation axis of the rotating body to move the rotation axis of the fifth rotating body in a plane and controls transmission of rotational force to the reel rest shaft; , when the first control board is in a movable state, the second control board is in an immovable state, and when the second control board is in a movable state, the first control board is in a movable state.
and movement prevention means for rendering the control plate immovable.

[Operation] In this invention, the first to third rotating bodies rotate coaxially, and the first and second control plates rotate in a plane about the rotation axis of the first rotating body. . Further, since the first and third rotating bodies are separated by a distance that allows a friction body to exist, and the second and third rotating bodies are separated by a distance that allows an elastic body to be disposed between them, the apparatus can be made more compact.

[Embodiments of the Invention] Hereinafter, a case in which the present invention is applied to an automatic reciprocating tape player for use in an automobile will be described with reference to the drawings.

FIG. 1 is a diagram showing an aspect of the L playback state of a tape player which is an embodiment of the present invention. Here, the L playback state is the capstan F on the right side of Figure 1.
435a and the pinch roller F420a are shown in pressure contact with each other.

Configuration of Tape Player In Fig. 1, the tape player consists of a main base 1 to which various parts are attached for setting a cassette case (tape magazine), playing magnetic tape (constant speed running), fast forwarding (high speed running), etc.
00 and one side of main base 100 (top of drawing)
a reel rest device 200 that is placed approximately in the center of the main base 100, a reel rest drive device 300 that transmits the rotational force from the motor 101 to the reel rest device; It includes a tape running control system 400 that is arranged along the other side (lower part in FIG. 1) of the main-in-base 100 and runs the magnetic tape at a constant speed or at high speed. The motor 101 has a two-stage motor pulley 102, and the reel rest device 2
00 has a pair of reel rests arranged parallel to the other side of the main base, namely, a reel rest F201a and a reel rest R201b.
The reel rest drive device 300 has a shaft idler 301 that serves as a support shaft. Drive device 300
is the axis of the motor 101 and the reel rest 201a,
It is arranged inside a triangle formed by connecting the respective axes of 201b.

A sub-base 103 is attached to a predetermined position of the main base 100, and includes a drive arm 104, a sub-motor (not shown) serving as a drive source for the drive arm 104, and a reduction gear for applying rotational force of the sub-motor to the drive arm 104. (not shown). Drive arm 104
is the pin D105 planted on the sub-base 103.
It is rotatably provided around the axis, and a pin DA106 is installed at one end thereof. Drive arm 10
4 is controlled by a drive arm regulating arm (not shown) attached to the sub-base 103. The movement of the drive arm 104 is
The tape running control system 400 is connected via a link PR107 having a bifurcated claw at one end that engages with the DA106.
transmitted to. The link PR 107 has a pin LP 108 planted at the other end, slides along the side wall of the sub-base 103 in synchronization with the movement of the drive arm 104, and transmits the movement to the link cam 402.

The tape running control system 400 is a link PR107.
A pin that has a long groove that engages with the pin LP108 that is planted on the main base 100 and that is planted on the main base 100.
Link cam 40 that can rotate freely around CL110
Contains 2. A pin LC403 is installed at a predetermined position on the link cam 402, and engages with a long hole formed at a predetermined position in the cam plate head 404 to transmit the movement of the link cam 402 to the cam plate 404. do. Cam plate head 4
04 is a pin planted on the main base 100
It has guide grooves 411a and 411b in which the CF 111a and the pin CR 111b engage, respectively, and can slide in the directions of arrows F and R (horizontal direction) in FIG. 1 in conjunction with the movement of the link cam 402. moreover,
The cam plate head 404 has a pinch roller F4.
cam F415a and cam R415b for regulating the functions of pinch roller R420a and pinch roller R420b, respectively.
When the magnetic tape 150 is fast forwarded, the magnetic head 1
A pin CH422 that engages with a long groove of a cam plate direct 430 is installed at a predetermined position. Pinch roller F420a is a roller that engages with cam F415a.
PF425a, and rotates clockwise in the drawing to press the magnetic tape 150 against the capstan F435a during playback of the magnetic tape in the direction of the white arrow F (positive direction) in FIG. For example, although not shown, a biasing force is applied by a spring. Also, Laura
PF425a is provided at a position where it engages with cam F415a provided on cam plate head 404 so as not to press magnetic tape 150 against capstan F435a during playback in the direction of white arrow R (reverse direction) in FIG. . Capstan F4
35a and capstan R435b are flywheel F470a and flywheel R470, respectively.
It rotates around the central axis of b. Both flywheel F470a and flywheel R470b receive rotational force from motor 101 via main belt 170 and rotate in the same direction. The pinch roller R420b moves in the direction of the white arrow R in the drawing with the pin PR120b planted on the main base 100 as an axis.
During playback in the reverse direction, a biasing force in the counterclockwise direction is applied by, for example, a spring. Also, Laura
When the PR425b is playing in the direction of the white arrow F (forward direction) in the figure, the magnetic tape 150 is transferred to the capstan R4.
35b so that it does not press on the cam plate head 4.
It is provided at a position where it engages with the cam R415b provided in 04. A head roller H431 that engages with the cam H421 is provided at a predetermined position on the base head 432. The cam base head 432 is a pin installed on the main base 100.
HF115a, pin HR115b, pin HC115
have guide grooves that engage with C, respectively. This base head 432 connects the magnetic head 151 to the magnetic tape 1.
52, the biasing force of the spring head 434 always moves it forward toward the cassette case (tape magazine) (from the bottom to the top in the drawing).
It is possible. Furthermore, during tape fast forwarding, the roller H431 that engages with the cam H421 of the cam plate head 404 slides to the top of the cam H421.
The magnetic head 151 is moved back from the reproduction position against the biasing force of the spring head 434. One end of the spring head 434 is attached to the main base 10.
The other end is hung on the base head 432, and its elastic force urges the base head 432 toward the cassette case. Cam plate head 404
A plate direct 430 having a long groove that engages with a pin CH422 erected on the main base 100 is rotatably provided around the pin PD122 erected on the main base 100, and is connected to the cam plate head 404 via the pin CH422. It rotates in conjunction with the sliding movement of. In addition, the plate direct 430 is connected to the pin PLF4 installed in the plate lever idler 440.
The plate lever idler 440 has a cam DF436a and a cam DR436b that abut the pin PLR 41a and the pin PLR441b, respectively, and transmits the movement to the plate lever idler 440 via the cam DF436a and the cam DR436b. The plate lever idler 440 is connected to the main base 1
Pin PI131 and pin LI132 planted on 00
It has an elongated hole and an elongated groove that engage with each other, and using these as a guide, it can slide in the direction of the arrow PL or FF in the drawing (in the vertical direction in the drawing) in conjunction with the movement of the plate direct 430. In addition, the plate lever idler 440 is moved in the direction of arrow FF (downward in the drawing) by the biasing force of the spring PL459.
The pin PLF441a and the pin PLR44 which are biased and set on the plate lever idler 440
1b is the cam surface cam of Plate Direct 430
It is brought into contact with one or both of the DF 436a and the cam DR 436b. Furthermore, the plate lever idler 440 is a lever idler 450.
It has a long groove that engages with the pin PLL 451 planted in the lever idler 4.
50. The lever idler 450 is rotatable around a pin LI 132 planted on the main base 100, and the pin LI 132 is planted so as to engage the plate lever idler 440 in the long groove.
Plate lever idler 44 via LL451
It rotates in conjunction with the sliding movement of 0. Additionally, the lever idler 450 is connected to the cam plate idler 210.
The cam plate idler 210 has a pin CC452 planted so as to engage with a long hole provided in the cam plate idler 210. The cam plate idler 210 has a long hole that engages with a pin CC452 set on the lever idler 450, and slides in conjunction with the rotation of the lever idler 452. Also, cam plate idler 2
10 is the pin MB planted on the main base 100
-1 161 and pin MB-2 162, respectively, and are slidable in the directions of thick arrows PL and FF in the drawing (horizontal direction in the drawing).
Furthermore, the cam plate idler 210 has a cam hole consisting of a wide part and a narrow part, that is, the cam PL2.
06, has a cam FF208. Due to the movement of the cam plate idler 210, the reel rest drive device 300 transmits the rotational force from the motor 101 to one of the reel rests of the reel rest devices 200.

Configuration of Reel Rest Drive Device FIG. 2 is a sectional view showing the detailed configuration of the reel rest drive device. In FIG. 2, the reel rest drive device 300 rotates around a shaft idler 301 that is installed on the main base 100 as a central axis. The motor 10 is attached to the shaft idler 301.
The shaft portion of the idler pulley 310, which receives rotational force from the idler belt 180 (see FIG. 1) from the idler pulley 310, is loosely fitted. The idler pulley 310 rotates around the shaft idler 301. The pulley 310 is located below the shaft of the idler pulley 310.
A metal 311 is lightly press-fitted to smooth the rotation and maintain the initial state (no shaft wear, etc.). A friction body (felt in this embodiment) 312 is provided on the upper surface of the idler pulley 310 as a slip mechanism (which causes the idler pulley to slip when a rated torque or more is applied). Idler pulley 31
The rotational force of 0 is applied to the FF base 313 which is loosely fitted to the middle part of the shaft of the pulley 310 via this felt 312.
given to. The FF base 313 is the pulley 31
It is possible to rotate with the intermediate part of the axis of 0 as the rotation axis. At the top of the shaft of the pulley 310 is a gear idler PL314.
The lower part of the cylinder is press-fitted. Therefore, gear idler PL314 performs the same rotation as pulley 310. Gear idler PL314 and FF base 3
A spring FF base 315 is disposed between the spring FF base 315 and the spring FF base 315. One end of the spring FF base 315 is brought into contact with the gear idler PL 314, and the other end is brought into contact with the FF base 313 via a washer 316. The spring FF base 315 pushes down the FF base 313 by its elastic force, and brings the FF base 313 into pressure contact with the felt 312. The friction torque generated by this pressure contact force is applied to the gear idler FF340, which is press-fitted into the FF base 313.
This torque is used as torque for fast tape winding through the gear FF330, and is also used to prevent damage to each member (such as seizure of the motor 101) when the tape winding is finished. Watshiya 316 is spring FF
The spring is provided between the base 315 and the FF base 313, and prevents the rotation of the FF base 313 from being transmitted to the spring FF base 315. There is a stopper collar 317 on the top of the cylinder of the gear door P314.
is press-fitted. Therefore, the stopper collar 317 performs the same rotation as the gear idler PL 314 and the idler pulley 310. An idler base PL220 is interposed between the stopper collar 317 and the gear idler PL314.
The PL 220 is rotatable around the outer periphery of the stopper collar 317 as a rotation axis. Idler base PL2
A cam plate idler 210 is disposed between the main base 100 and the cam plate idler 20 . idler base
The movement of PL220 is the cam plate idler 21
0 (see FIG. 1). That is, the cam plate idler 210 regulates the movement of the idler base PL220 and the idler base FF230.
The idler base PL 220 and the idler base FF 230 are appropriately engaged in movement depending on whether the magnetic tape is reproduced or fast-forwarded. Gear PL320 for idler base PL220
A shaft PL221, which serves as a rotation axis, is erected.
A spring PL222 is disposed between the idler base PL220 and the gear PL320. One end of the spring PL222 is connected to the idler base PL22.
0, and due to its elastic force, gear PL320
is forced downward and gear PL320 is connected to shaft PL2.
21 is brought into pressure contact with a retaining ring 223. This eliminates variations in the vertical position of the gear PL320, and also causes the gear PL32 to shift due to the friction torque generated by the elastic force of the spring PL222.
A force is generated to rotate the idler base PL220 in the rotation direction of 0. Gear PL320 meshes with gear idler PL314 and shaft PL2
21 as the rotation axis, gear idler PL3
14 to the slip gear 250 (not shown in FIG. 2) of the reel rest device 200. A gear idler FF 340 is press-fitted onto the upper outer periphery of the FF base 313 shaft. As a result, gear idler FF340 becomes FF
It performs the same rotation as the base 313. gear idler
An idler base FF230 is rotatably inserted between the FF340 and the FF base 313. The idler base FF230 is rotatable around the middle part of the FF base 313, and its movement is controlled by the cam FF208 provided on the cam plate idler 210.
regulated by. The idler base FF230 has a shaft FF23 that becomes the rotation axis of the gear FF330.
1 is planted. A spring FF335 is disposed between the gear FF330 and the idler base FF230. One end of the spring FF335 is brought into contact with the idler base FF230, and its elastic force urges the gear FF330 upward to bring it into pressure contact with the retaining ring 232 provided on the shaft FF231.
This eliminates variations in the vertical position of the gear FF330, and generates a force for rotating the idler base FF230 in the rotational direction of the gear FF330 by the friction torque generated by the elastic force.
Stopper pin 23 for idler base FF230
4 will be planted. During fast-forwarding of the magnetic tape, the stopper pin 234 comes into contact with an adjusting claw provided on the main-in-base 100, and the stopper pin 234 contacts the reel gear 260 (not shown in FIG. 2) of the reel rest device and the gear FF 33.
This is a pin that has the function of a stopper that allows adjustment of the mesh with 0.

Structure of idler base PL Figure 3A shows pin PL on idler base PL220.
3B is a side view of FIG. 3A. FIG. 3B is a side view of FIG. 3A. The idler base PL220 is a holding plate for the gear PL320 that meshes with the slip gear 250 (see Fig. 5) of the reel rest device during magnetic tape playback, and uses the small outer diameter of the stopper collar 317 as the rotation axis and does not impede the rotation of the stopper collar 317. It has a round hole 222' approximately in the center. Also, when playing back a magnetic tape, the slip gear 2 of the reel rest device
Corner R223 and corner F22 contact adjustment claws provided on the main base 100 in order to adjust the engagement between the gear PL320 and the gear PL320.
It has 4. The pin PL205 installed on the idler base PL220 is used to connect the cam plate idler so that the slip gear 250 and the gear PL320 are engaged during magnetic tape playback, and the slip gear 250 and the gear PL320 are disengaged during fast winding of the magnetic tape. It engages with a cam groove 206 provided in 210. A shaft PL221 installed on the idler base PL220 is a rotating shaft of the gear PL320.

Configuration of idler base FF Figure 4A shows idler base FF230, stopper pin 234, pin FF207 and shaft FF.
231 is a plan view illustrating a state in which 231 is planted. FIG. FIG. 4B is a front view of FIG. 4A, and the idler base FF230 is a holding plate for the gear FF330 that meshes with the reel gear 260 (see FIG. 5) of the reel rest device during fast forwarding of the magnetic tape. is the rotation axis, and FF base 3
It has a round hole 235 approximately in the center that does not impede the rotation of 13. Stop pin 234 is idler based
The main base 100 is a pin installed on the FF230 to enable meshing adjustment between the reel gear 260 and the gear FF330 during fast forwarding of the magnetic tape.
It functions as a stopper that comes into contact with the adjustment pawl provided on the. Pin FF207 is idler base FF230
It engages with a cam groove 208 provided in the cam plate idler 210 for the purpose of engaging the reel gear 260 and gear FF330 during magnetic tape fast forwarding, and disengaging the reel gear 260 and gear FF330 during magnetic tape playback. match. Shaft FF231 is a pin planted on idler base FF230, and gear FF330
It is the axis of rotation.

As described above, the reel rest drive device 300
When playing magnetic tape, the idler base PL
The rotation of the idler base FF220 applies rotational force to the reel rest device via the gear PL320, and during fast forwarding of the magnetic tape, the idler base FF230 is made rotatable and the rotational force is transmitted to the reel rest device via the gear FF330. It's summery.

Configuration of Reel Rest Device FIG. 5 is a sectional view showing the detailed configuration of the reel rest device. Reel rest F201 in Figure 1
Both a and reel rest R201b have the configuration shown in FIG. 5, and either one is driven by the reel rest drive device shown in FIG. 2. Below, the fifth
The configuration of the reel rest device will be explained with reference to the drawings.

A bottom reel 240, which serves as a support for the reel rest device, is attached to a predetermined position on the main base 100. The bottom reel 240 includes a shaft reel 241 that serves as the rotation axis of the reel rest device 200.
is planted. The inner cylinder of the reel gear 260 is press-fitted into the lower part of the shaft of the reel rest 201.
The reel gear 260 is a tape winding drive source during tape fast forwarding, and receives rotational force from the gear FF 330 of the reel rest drive device 300 to perform the same rotation as the reel rest 201. reel gear 260
At the top, a slip gear 250 is attached to the reel rest 2.
It is loosely fitted onto the shaft of 01. The slip gear 250 receives rotational force from the gear PL320 of the reel rest drive device 300, rotates about the axis of the reel rest 201, and serves as a tape winding drive source during magnetic tape reproduction. Reel gear 260 and slip gear 25
A spring reel 249 is disposed between the spring reel 249 and the spring reel 249. One end of the spring reel 249 contacts a reel gear 260, and the other end contacts a slip gear 250. The slip gear 250 is urged upward by the elastic force of the spring reel 249, and is brought into pressure contact with a friction body (felt in this embodiment) 245 that is bonded to the lower surface of the reel rest 201 and serves as a slip mechanism. The rotational force of the slip gear 250 is applied to the reel rest 201 by the frictional force generated by this pressure contact force. The felt 245 has the function of a slip mechanism (slips when more than the rated torque is applied), and the slip gear 250
The rotation difference between the reel rest 201 and the reel rest 201 is smoothly absorbed. Reel rest 201 is shaft reel 241
is loosely fitted into the slip gear 2 during playback mode.
The rotating force of the reel gear 260 serves as a base for winding the magnetic tape, which is rotated by the rotating force of the reel gear 260 in the constant fast forward mode. reel rest 201
The inner cylinder of the reel key 243 is loosely fitted onto the upper outer periphery of the shaft. The outer periphery of the shaft of the reel rest 201 has a hexagonal shape, and the inner chamber of the reel key 243 also has a hexagonal shape. The reel key 243 is slidable up and down along the axis of the reel rest 201,
And the same rotation as the reel rest 201 is performed.
This has been done conventionally. reel rest 2
A spring key 244 is disposed between 01 and the reel key 243. The lower end of the spring key 244 is brought into contact with the reel rest 201, thereby urging the reel key 243 upward and pressing the upper end of the reel key 243 against the lower end of the reel top 242. As a result, when the reel hub (not shown) of the cassette case comes into contact with the reel key 243 when the cassette case is attached, the reel key 243 moves elastically downward, allowing smooth attachment of the cassette case. reel top 24
2 is press-fitted onto the upper part of the shaft of the reel rest 201, and its inner cylinder serves as a rotation bearing for the reel rest 201. A washer 248 and a spring washer 247 are disposed between the bottom reel 240 and the reel gear 260. Spring washer 24
7 urges the reel rest device 200 upward with its elastic force, and brings the reel top 242 into contact with the retaining ring 251 provided on the upper part of the shaft reel 241.
and slip gear 250 and reel gear 260
The vertical position of the reel rest device 200 is stabilized, and appropriate back tension is given to the reel rest device 200.
The washer 248 provided between the spring reel 247 and the reel gear 260 is an intervening member that uses the elastic force of the spring washer 247 to apply appropriate back tension to the reel rest device 200.

Transmission Path of Rotational Force of Motor FIG. 6 is a diagram showing a path for transmitting the rotational force of the motor to the reel rest drive device and the capstan. In FIG. 6, a two-stage motor pulley 102 is provided on a rotating shaft 190 of a motor 101. As shown in FIG. The motor 101 can be controlled to rotate clockwise and counterclockwise, and during fast forwarding of the magnetic tape, the effect of the rotational control is exhibited, resulting in faster rotation than during playback. The two-stage motor pulley 102 independently transmits the rotation of the motor 101 to the flywheel 470 and the pulley 310 of the reel rest drive device. The rotational force of the motor 101 is transmitted to the flywheel 470 via the main belt 170, while the idler belt 180 is transmitted to the pulley 310.
The rotational force of the motor 101 is transmitted through the motor. The flywheel 470 rotates about the capstan 435 as a rotation axis. As can be seen from Figure 6,
Rotation direction of motor 101 and flywheel 470
And the rotation direction of pulley 310 is the same.

FIG. 7 is a diagram showing details of the transmission path of each part that transmits the rotation of the motor to the reel rest device during magnetic tape reproduction. However, a portion of the reel rest drive device for fast winding of the magnetic tape is omitted. Rotation of motor 101 is caused by motor pulley 1
02 to the pulley 310 via the idler belt 180. The rotation speed of the motor 101 is reduced by the diameter ratio of the motor pulley 102 and the pulley 310. Next, the rotation of the pulley 310 is transmitted from a gear idler PL314 press-fitted to the upper part of the pulley 310 to a slip gear 250 of the reel rest device via a gear PL320. The rotation speed of the reel rest 201 is determined by the pitch diameter ratio of the slip gear 250 and the gear PL320.

Generally, when playing back a magnetic tape, the rotational speed of the slip gear 250 is controlled by the reel rest 250.
It is necessary to ensure that the magnetic tape is wound up at a rotational speed higher than 1. In order to absorb this difference in rotation speed, in this embodiment, the slip gear 250 is pressed against the felt 245 by using the elastic force of the spring reel 249, so that the slip gear 250 is smoothly slid and rotated, and the magnetic tape is wound. Generate torque.

Operation F playback operation The operation during F playback will be described below with reference to the drawings.

During the F regeneration shown in FIG. 1, the pin DA 106 erected on the drive arm 104 is locked at the F position. Accordingly, link PR107 engaged with pin DA106, pin LP1 of link PR107
The link cam 402 engaged with 08 rotates clockwise and locks. Therefore, the cam plate head 404 is at approximately the end position in the direction of arrow F. The base head 432 includes a roller H431 and a cam 42.
1, so that the spring head 434 slides and locks at a predetermined position for reproducing the magnetic tape by the biasing force of the spring head 434. Since there is a gap between the roller PF425a and the cam F415a, the pinch roller F420a presses the magnetic tape 150 against the capstan F435a by the clockwise rotating force. On the other hand, pinch roller R420b is a roller
PR425b is in contact with cam R415b,
Rotate clockwise. Therefore, the pinch roller R420b holds the magnetic tape 150 between the capstan R420b and the magnetic tape 150.
435b and is not involved in the running of the magnetic tape. Next, the cam plate head 404 slides in the direction of arrow F, and the plate direct 430 engaged with the pin CH422 rotates clockwise.
Cam DR436a is plate lever idler 44
0 to the pin against the biasing force of spring PL459.
Slide and lock PL-F441a in the PL direction of the arrow. As a result, the pin LL451 and the pin CC452 planted in the lever idler 450 that are engaged with the long groove of the plate lever idler 440 rotate counterclockwise, and the cam plate idler 210 reaches almost the end in the direction of the thick arrow PL. To position. In this state, the motor 101 rotates counterclockwise. Therefore, as shown in FIG. 6, the main belt 170 and idler belt 180, which are hooked around the motor pulley 102 provided on the motor shaft 190, also rotate counterclockwise. Thereby,
Flywheel F470a and flywheel R470b on which the main belt 170 is hung
similarly rotates counterclockwise. Therefore, the capstans 435a and 435b also rotate counterclockwise, and the magnetic tape 150 runs in the direction of the white arrow F in FIG. The magnetic tape 150 fed out by the capstan F435a is wound onto a reel rest 201 made of the members shown in FIG.

The manner in which the reel rest 201 winds up the magnetic tape 150 is as follows. The idler belt 180 shown in FIG. 6 is placed around the pulley 310 of FIG. 2, and the pulley 310 rotates in the same counterclockwise direction as the motor 101. The gear idler PL 314 press-fitted into the pulley 310 and the elastic force of the spring FF base 315 press the pulley 310 through the felt 312.
The FF base 313 and the gear idler FF 340 press-fitted into the FF base 313 both rotate counterclockwise. At this time, the gear idler
While the gear PL320 meshing with the PL314 rotates clockwise, the same counterclockwise rotational force as the pulley 310 is applied to the idler base PL220 due to the elastic reaction force of the spring PL222. Similarly, the gear FF330 rotates clockwise, and the resilient force of the spring FF335 causes the idler base FF230 to rotate counterclockwise. However, when the cam plate idler 210 is in the position on the arrow PL side in Fig. 1,
Pin FF207 of idler base FF230 is the cam
It is located between the narrow grooves of FF208. This results in
The idler base FF230 is prevented from rotating, and the gear FF330 is locked at a substantially intermediate position between the reel rest 201 and the reel rest R201b, and cannot mesh with either reel gear. on the other hand,
Pin PL205 of idler base PL220 is the cam
Located at the wide part of PL206, pulley 310
rotates in the same direction as the rotation of.

In Figure 8, gear PL320 is the reel rest 201.
2 is a plan view showing a state in which the slip gear 250 is engaged with the slip gear 250, and is a partially enlarged view of FIG. 1. FIG. As seen from FIGS. 7 and 8, the motor 101
The rotation is reliably transmitted to the reel rest 201 via each member. Here, gear PL320
and slip gear 250 are both gears,
Depending on the manner in which they engage, abnormal noise may be generated and the magnetic tape may be wound unevenly.
This point must be taken into consideration particularly in magnetic tape playback devices that combine a large number of components. Therefore, gear PL320 and slip gear 25
In order to ensure the meshing with 0, in this embodiment, a corner F224 and a corner R223 (see Fig. 3A) are provided on a part of the idler base PL220.
A pawl F185a and a pawl R185b are provided on the main base 100 (see FIG. 8), which abut on each other and allow fine adjustment of the meshing of the gears.

Note that the transmission path of the rotational force from the motor 101 to the reel rest 201 is as shown in FIG.

R Reproducing Operation Next, the R reproducing operation of the magnetic tape will be explained. However, R regeneration refers to a state in which the capstan R435b and the pinch roller R420b are in pressure contact.

FIG. 9 is a plan view showing the mode during R reproduction.
In FIG. 9, during R playback, the drive arm 104 is rotated counterclockwise by a drive motor (not shown) provided on the sub-base 103, and the pin DA 106 is locked at the R position.
In conjunction with this movement, the link cam 107 similarly slides counterclockwise, and at the same time, the cam plate head 409 is located almost at the end in the direction of arrow R in FIG. At this time, there is a gap between the roller H431 and the cam H421, and the base head 432 is slid and locked at a predetermined position for magnetic tape reproduction by the biasing force of the spring head 434. roller
Since the PF425a is in contact with the cam F415a and the pinch roller F420a is rotating counterclockwise, it has no involvement in the running of the magnetic tape. On the other hand, pinch roller R420b is roller PR42
A gap is created between the cam R415a and the magnetic tape 15 due to the counterclockwise rotational force.
0 to the capstan R435b. Next, the cam plate head 404 moves toward the arrow R in FIG.
The plate direct 430 located at the end of the direction and engaged with the pin CH422 rotates counterclockwise.
1b is slid and locked in the direction of the arrow PL against the biasing force of the spring PL459.The position of the plate lever idler 440 at this time is the same as when playing the magnetic tape 150 in the direction of the white arrow F (positive direction) described above. It has become a trend. Therefore, the cam plate idler 210 is located approximately at the end of the thick arrow in the PL direction. During R regeneration, the pinch roller R420b comes into pressure contact with the capstan R435b,
In order to run the magnetic tape 150 in the direction of the white arrow R, the motor 101 is rotating clockwise. Therefore, the reel rest R201b also rotates clockwise as described below. Referring to FIGS. 2, 5, and 7, when the motor 101 rotates clockwise, the pulley 310
Gear idler PL314, gear idler FF340
It can be seen that both rotate clockwise. Gear PL3 meshing with gear idler PL314
20 rotates counterclockwise, and the idler base PL220 generates the same clockwise rotational force as the pulley 310 due to the reaction force due to the elastic force of the spring PL222. Similarly, gear FF330 rotates counterclockwise and spring FF3
With 35 elastic force, idler base FF230
Attempt to rotate clockwise.

FIG. 10 is a diagram showing a state in which the gear PL is engaged with the reel rest R, and is a partially enlarged view of FIG. 9. As seen from FIG. 10, the pin FF207 of the idler base FF230 is located between the narrow grooves of the cam FFB208 of the cam plate idler 210, while the pin of the idler base PL220
PL205 is located at the wide part of cam PL206. As a result, the idler base PL220 and the gear PL320, which rotate in the same clockwise direction as the pulley 310, mesh with the slip gear 250 of the reel rest R201b, making it possible to wind the magnetic tape 150. PL320
In order to achieve a predetermined meshing between the slip gear 250 and the corner R2 of the idler base PL220,
23 provided on the main base 100 R185b
I'm trying to make it come into contact with.

In addition, in the above explanation, the pinch roller F
A drive motor is used to switch the pinch roller R420a and the pinch roller R420b, and the other motor runs and winds the magnetic tape. This allows the drive motor to be used not only as a drive source for switching the pinch rollers, but also for automatic suction of the cassette case, setting for playback, and automatic ejection. The purpose of this is to change the running direction of the magnetic tape by changing the direction of the magnetic tape, and to eliminate the need for members involved in this process. However, the rotation control system of the motor 101, the transmission path of the rotational force from the sub-motor to the drive arm, and its operation control system do not constitute a part of this invention. Also,
By arranging the motor 101 in a position directly facing the magnetic head 101 with the cassette case in between, the flywheel F470a of the motor 101,
The influence on the flywheel R470b becomes equal.

Rapid Forward Operation FIG. 11 is a detailed sectional view showing the transmission path of rotational force from the motor to the reel rest during fast forwarding of the magnetic tape. However, parts for the reproducing operation (constant speed running of the magnetic tape) in the reel rest drive device are omitted. First, referring to FIG. 11, the rotational force transmission operation during fast forwarding will be described.

Rotation of the motor 101 is transmitted from the motor pulley 102 to the pulley 310 via the main belt 180. The rotation speed of motor 101 is reduced by the ratio of the diameters of motor pulley 102 and pulley 310. This pulley 310 has a spring FF
FF base 31 using the elastic force of base 315
3 are pressed together through felt 312. In addition, the gear idler FF340 is installed on the FF base 313.
are press-fitted, the rotation of the pulley 310 is controlled by the FF base 313 and the FF base 313 via the felt 312.
The gear idler FF340 is rotated at the same time, and its rotational force is transmitted to the reel gear 260 of the reel rest device via the gear FF330. Since reel gear 260 and reel rest 201 perform the same rotation, the rotation speed of reel rest 201 is determined by the pitch diameter ratio of reel gear 260 and gear idler FF 340. The reel gear 260 is press-fitted into the reel rest 201, and for winding the magnetic tape 150, the reel gear 260 is press-fitted into the reel rest 201.
0 and the reel rest 201 perform the same rotation. The magnetic tape 15 uses felt 312.
This is to ensure that the end of the magnetic tape is detected and each member is protected by operating the slip mechanism in this felt 312 after winding up the magnetic tape, and to prevent slips from occurring when winding the magnetic tape. is desirable. Therefore, it is desirable to separately provide a winding torque for regeneration and a winding torque for early winding, and to set the winding torque for early winding to a high value.

FIG. 12 is a diagram showing how the magnetic tape is fast-forwarded in the direction of white arrow F (forward direction) in the tape player in which the various members shown in FIG. 1 are arranged. The operation of each member during fast forwarding of the tape will be described below with reference to FIG.

A drive motor (not shown) provided on the sub-base 103 drives the pin of the drive arm 104.
The DA 106 is rotated from the R or F position to the C position and locked. Detection of the positions R, C, and F of the pin DA106 is performed by a sliding switch provided on a cam (not shown) that rotates the drive arm 106, but the details of this position detection constitute the present invention. do not. When pin DA106 is locked at position C, link PR1 engaged with this
07 pin LP108 rotates the link cam 402. Next, pin LC40 of link cam 402
3 locks the cam plate head 404 at a point C midway between arrows F and R. At this time, base head 4
The head roller H431 provided on the cam H42
The cam H421 moves along the slope of the cam H421 against the biasing force of the spring head 434, and is locked at the top of the cam H421. As a result, the magnetic head 151 is slightly retreated from the reproducing position, so that a large drag force is not generated when the magnetic tape 150 is wound quickly. In addition, the first
2 shows a mode in which the magnetic head 151 is brought into contact with the magnetic tape 150, making it possible to detect between tracks on the music tape.
Depending on the shape of the magnetic head 151, the magnetic head 151 can be completely separated from the magnetic tape 150. Further, the roller PF425a of the pinch roller F420a and the roller PR425b of the pinch roller R420b are respectively attached to the cam plate head 404.
The pinch roller F420a contacts the cam F415a and the cam R415b of the capstan F4.
35a and the pinch roller R420b are separated from the capstan R435b, and do not take any part in the rapid forwarding of the magnetic tape. Next, the cam plate head 432 is
Since the cam DR430 is engaged with the pin CH422 mounted on the cam plate head 432, the cam DR430 is also engaged at the midpoint of the rotation range. At this time, the pin PLF441a provided in the plate lever idler 440 is connected to the cam DF436a.
On the other hand, pin PLR441b is connected to cam DR43.
6b, and as a result, the plate lever idler 440 is slidably locked in the FF direction of the arrow by the biasing force of the spring PL459. Accordingly, pin LL451 and pin CC452 of lever idler 450, which were engaged with the long groove of plate lever idler 440, both rotate clockwise,
The cam plate idler 210 is locked at the end in the FF direction of the thick arrow.

In this state, the motor 101 is rotating counterclockwise in order to quickly wind the magnetic tape 150 (running at high speed) in the direction of the white arrow F in the figure. At this time, flywheel F470a and flywheel R470b are both rotating counterclockwise, but as described above, pinch roller F420a and pinch roller R420b are
35a and the capstan R435b, it does not take part in the rapid winding of the magnetic tape 150. Therefore, magnetic tape 1
The fast winding of 50 is performed by the rotational force of the reel rest F201a. Reel rest F
When the rotation of 201a is driven, the first
Pulley 310 in Figure 1, gear idler FF340,
Gear idler PL314 is rotating in the same counterclockwise direction as motor 101. Also, the gear
As PL320 and gear FF330 rotate clockwise, idler base PL220 obtains counterclockwise rotational force due to the elastic force of spring PL222, and idler base FF230 obtains counterclockwise rotational force due to the elastic force of spring FF335. obtain.
As seen from FIG. 12, the cam plate idler 210 is locked on the side of the thick arrow FF, and the pin PL205 of the idler base PL220 is attached to the cam plate idler 210.
Located between the narrow grooves of 206, the idler base PL
220 is prevented from rotating, the gear PL320 is locked at a substantially intermediate position between the reel rest L201a and the reel rest R201b, and cannot mesh with either reel gear. Also, idler base
The pin FF207 of the FF230 is located at the wide portion of the cam FF208 and rotates in the same direction as the rotation of the pulley 310. This state is best shown in FIG. 13, where the portion for constant speed running of the magnetic tape is omitted. As a result, as shown in FIG. 13, the gear FF330 meshes with the reel gear 260 of the reel rest F201a, and the rotation of the motor is reliably transmitted to the reel rest F201a via each member. The transmission path of the rotational force at this time is as shown in FIG.

Here, gear FF330 and reel rest F20
In meshing with reel gear 260 of 1a,
Since both rotate at high speed, it is well known that even the slightest misalignment can cause a loud abnormal noise. Therefore, in this embodiment, as best seen in FIG. 13, a stopper pin 234 is installed on the idler base FF230, and is brought into contact with the end of the stopper F191 provided on the main base 100 to prevent meshing. Allows for adjustment.

Fast Tape Winding Operation When the motor 101 is rotated clockwise in the state of locking and rotating each member shown in FIG. Rotate. However, as in the case of FIG. 12, it is not involved in the running of the magnetic tape 150 at all. However, the pulley 310 is rotated clockwise by the idler belt 180, and the gear idler
Both PL314 and gear idler FF340 rotate clockwise. Therefore, gear FF330 rotates counterclockwise, and idler base FF230 rotates clockwise due to the elastic force of spring FF335.

FIG. 14 is a plan view showing a state in which the motor rotates clockwise and the reel rest R performs fast winding in the clockwise direction. As seen in Figure 14, the gear
The FF 330 meshes with the reel gear 260 of the reel rest R201b, and the rotation of the motor is reliably transmitted to the reel rest 201b via each member. At this time, as in the case of L early winding shown in FIG. 13, gear FF330 and reel rest R201b
In order to properly mesh with the reel gear 260, a stopper pin 234 planted on the idler base FF230 abuts on a pawl R192 provided on the main base 100 to ensure proper meshing.

As described above, to quickly wind the magnetic tape, the drive motor (not shown) locks the drive arm 104 at point C, regardless of the magnetic tape playback direction, and the head roller H4 of the base head 432
31 to the cam H421 of the cam plate head 404
This is possible by keeping it at the top of the screen. Further, when the motor 101 rotates counterclockwise, the reel left F201a winds the magnetic tape quickly, and when the motor 101 rotates clockwise, the reel left F201b winds the magnetic tape quickly.

In the above explanation, the pitch circles of the gear idler PL314 and the gear idler FF340, which are directly connected to the pulley 310, are changed to wind the magnetic tape quickly, but in this device, the speed of the motor 101 is changed to wind the magnetic tape even faster. It also allows winding. Although not shown, the rotational speed of the motor 101 is switched by a switch and a control circuit linked to an operation button.

Further, as described above, the contact surface between the pulley 310 and the felt 312 is made to slip in order to protect each member at the end of fast winding of the magnetic tape.

Tape End Detection Figures 15A to 15C are diagrams showing a method of detecting the end of a magnetic tape. FIG. 15A is a configuration diagram of tape end detection using a reel rest device, in which light emitted from the photo interrupter 290 passes through a detection hole provided in the reel gear 260 and hits the slip gear 250, and the weak reflected light is detected by the photo interrupter. 290 is a partial diagram showing a state in which the light receiving element of No. 290 is reached. FIG. In FIG. 15A,
At the end of magnetic tape reproduction, the slip gear 250 receives rotation from the motor 101 and constantly rotates (see FIG. 12). Further, in order to efficiently absorb the emitted light from the photo interrupter 290, it is made of a low reflectance member, preferably a black member. The reel gear 260 is press-fitted into the reel rest 201, and the magnetic tape 150
Rotation stops at the end of the tape during playback and fast forward. In order to reliably reflect the emitted light from the photo interrupter 290, this reel gear 260 uses a high reflectance member, preferably a white member, and has holes spaced at equal intervals for passing the emitted light from the photo interrupter 290. Multiple units are provided. The photo interrupter 290 includes a light-emitting element that emits light and a light-receiving element that senses the light that hits an object and is reflected. Board 2
Reference numeral 91 is an insulating member disposed on the bottom reel 240 and having a conductor on its surface.

FIG. 15B shows a portion of the reel gear 260 in FIG. 15A in which the hole is not provided is located above the photo interrupter 290,
FIG. 3 is a partial diagram showing how the emitted light of zero reaches the light receiving element of the photointerrupter with almost the same intensity.

FIG. 15C is a diagram showing a state in which the single reel gear 260 is viewed from below, and a plurality of holes through which light emitted from the photo interrupter 290 passes are provided at equal intervals.

Next, the tape end detection operation will be explained. Reel gear 26 with holes shown in FIG. 15C
0 is provided in the reel rest device, during magnetic tape playback, as shown in FIG. As a result, the reel rest 201 rotates. At this time, magnetic tape 1
In order to wind up the reel 50 without loosening it, the slip gear 250 rotates faster than the reel rest 201. This difference in rotation speed is felt 2
45 absorbs smoothly. On the other hand, reel rest 2
01, a reel gear 260 is press-fitted downward, and both rotate at the same time. Therefore, the reel gear 260 and the slip gear 250 always have different rotational speeds. Here, the first
As shown in FIG. 5A, when the photo interrupter 290 is disposed below the reel gear 260, the photo interrupter 290 has a first light receiving element.
In the case of Fig. 5A, it is sensitive to weak light, and in the case of Fig. 15B, it is sensitive to strong light, and the reel gear 26
Together with the equally spaced holes provided at 0, it becomes possible to extract continuous light intensity signals.

Now, when the magnetic tape 150 reaches the end, the slip gear 250 is rotating, but the reel rest 2
01 and reel gear 250 are in a stationary state.
At this time, the light receiving element of the photo interrupter 290 receives a single intensity of light depending on whether or not there is a hole in the reel gear 260 above it. By detecting the change from this continuous light intensity signal to a single intensity optical signal, it is possible to detect the end of the tape in the magnetic tape playback state.

During fast forwarding of the magnetic tape, the gear FF330 of the reel rest drive device 300 and the reel gear 2
60 are engaged (see FIG. 11), and a continuous light intensity signal is obtained from the photo interrupter 290, as in the case of magnetic tape reproduction. Furthermore, when the magnetic tape 150 reaches the end, the reel rest 201 and the reel gear 26
0 is in a stationary state, and the pulley 310 is in the felt 3
Slip rotation on 12 planes. At this time, the slip gear 250 does not perform any function and is in the same stationary state as the reel rest 201. Therefore, in this case as well, the light receiving element of the photo interrupter 290 receives light of a single intensity, and as in the case of reproduction,
It becomes possible to detect the tape end state during fast forwarding of the magnetic tape 150.

To ensure the operation of these detection means,
Reel rest 20 on the photo interrupter 290 side
A reel gear 260 that rotates at the same time as 1 is provided, a plurality of equally spaced holes are provided, and a white member is provided to strongly reflect the emitted light from the photo interrupter 290. Further, the slip gear 250 is made of a black material so as to absorb this emitted light well.

[Effects of the Invention] The tape player of the present invention has a flywheel that is rotated by a drive source and suppresses rotational unevenness of the drive source, and a tape player that runs a tape-shaped recording medium by obtaining rotational force from the drive source. The tape player includes a reel rest device having a reel rest shaft for winding the tape-shaped recording medium, and a reel rest drive device that drives the reel rest shaft, and the reel rest drive device includes a reel rest drive device that drives the reel rest shaft. It is provided independently from the wheel,
a first rotating body having a disc-shaped portion for transmitting the driving force of the drive source; and a second rotating body that rotates together with the first rotating body and applies a first rotating force to the reel rest device. a rotating body, located between the second rotating body and the disk-shaped portion, rotating coaxially with the first rotating body and having a larger diameter than the second rotating body; a third rotating body that provides a second rotational force for fast forwarding or rewinding that is different from the rotational force; a slip mechanism comprising a friction body that transmits the rotational force of a rotating body to the third rotating body; and an elastic body disposed between the second rotating body and the third rotating body; a fourth rotary body to which the rotational force of the second rotary body is transmitted and to which the rotational force can be applied to the reel rest shaft; and a fourth rotary body to which the rotational force of the third rotary body is transmitted and which can apply the rotational force to the reel rest shaft. a fifth rotating body to obtain;
having a rotation axis of the fourth rotating body, and itself rotating in a plane about the rotation axis of the first rotating body to move the fourth rotation axis in a plane;
a first control plate that controls transmission of rotational force to the reel rest shaft; and a rotation axis of the fifth rotating body, and the plate itself is flat with the rotation axis of the first rotating body as an axis. a second control plate that rotates to move the rotation axis of the fifth rotating body in a plane and control transmission of rotational force to the reel rest axis, and the first control plate moves. When the state is enabled, the second
The control plate is made immovable, and when the second control plate is in a movable state, the first control plate is made immovable. Therefore, from the first to the third
The rotating bodies rotate coaxially, and the first and second control plates rotate in a plane about the rotation axis of the first rotating body. Further, the first and third rotating bodies are separated by a distance that allows a friction body to exist, and the second and third rotating bodies are separated by a distance that allows an elastic body to be disposed therebetween. This allows the device to be made more compact. In addition, the first and second rotational forces are transmitted to the reel rest shaft through separate paths, and each of the rotational force transmission paths is controlled by using a movement prevention means consisting of a single cam plate. is in an active state. Therefore, the switching control mechanism has a simple configuration, and the device can be made more compact. Furthermore, since the friction body is used to transmit the rotational force, the tape can run uniformly and each member can be protected at the end of the tape.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a tape player according to an embodiment of the present invention during L playback. FIG. 2 is a detailed sectional view showing the configuration of the reel rest drive device. 3A and 3B are diagrams showing the structure of the idler base PL of the reel rest drive device. FIGS. 4A and 4B are diagrams showing the structure of the idler base FF of the reel rest drive device. FIG. 5 is a detailed sectional view showing the configuration of the reel rest device. FIG. 6 is a diagram showing a path for transmitting the rotation of the motor to the reel rest drive device and the capstan. FIG. 7 is a diagram showing a transmission path of the rotational force of the motor to the reel rest device when the tape runs at a constant speed. FIG. 8 is a partially enlarged view of FIG. 1. FIG. 9 is a plan view showing the state of the tape player during R playback. 1st
Figure 0 is a partially enlarged view of Figure 9. FIG. 11 is a diagram showing a transmission path of the rotational force of the motor to the reel rest device when the tape runs at high speed. Figure 12 is L
FIG. 3 is a plan view showing the state of the tape player when running at high speed. FIG. 13 is a partially enlarged view of FIG. 12. FIG. 14 is a partially enlarged view showing the state of the tape player when running at R high speed. 15th
Figures A to 15C are diagrams showing modes of detecting the tape end. Figure 15A shows the case where the hole in the reel gear is located above the photo interrupter, and Figure 15B shows the case where the hole in the reel gear is located above the photo interrupter. Indicates the case located at the top of the interrupter,
FIG. 15C is a plan view showing the structure of the reel gear. FIG. 16 is a plan view showing the configuration of a conventional tape player. FIG. 17 is a plan view showing the main parts of a conventional tape player during forward playback. FIG. 18 is a plan view showing the main parts of a conventional tape player during rewinding in the reverse direction. FIG. 19 is a plan view showing the main parts of a conventional tape player during playback in the reverse direction. FIG. 20 is a plan view showing the main parts of a conventional tape player during forward rewinding. FIG. 21 is a sectional view showing a rotational force transmission path when a tape runs at high speed in a conventional tape player. FIGS. 22 and 23 are diagrams for explaining the tape fast forward operation in a conventional tape player. FIG. 24 is a side view of a tape running direction detection switch in a conventional tape player. FIG. 25 is a diagram showing electrical connections of main parts in a conventional tape player. In the figure, 100 is the main base, 101 is the motor, 102 is the motor pulley, 170 is the main belt, 180 is the idler belt, 185a is the claw F, 185b is the claw R, 191 and 192 are the adjustment claws for the stopper, and 200 is the reel rest device. ,201,
201a, 201b are reel rests, 205 is pin PL, 206 is cam PL, 207 is pin FF, 2
08 is cam FF, 210 is cam plate idler,
220 is idler base PL, 221 is shaft
PL, 223 is corner R, 224 is corner F, 2
30 is idler base FF, 231 is shaft
FF, 234 is a stopper pin, 241 is a shaft reel, 245 is a felt, 250 is a slip gear, 260 is a reel gear, 300 is a reel rest drive device, 301 is a shaft idler, 310 is a pulley, 312 is a felt, 313 is an FF base,
320 is a gear PL, 330 is a gear FF, 340 is a gear airer FF, 470, 470a, 470b are flywheels, and 435, 435a, 435b are capstans. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1 A tape player that has a flywheel that is rotated by a drive source and suppresses uneven rotation of the drive source, and that runs a tape-shaped recording medium by obtaining rotational force from the drive source, wherein the tape player The reel rest device includes a reel rest device having a reel rest shaft for winding up a shaped recording medium, and a reel rest drive device for driving the reel rest drive device, the reel rest drive device being provided independently of the flywheel, and a first rotating body having a disk-shaped portion for transmitting the driving force of the driving source;
a second rotating body that rotates together with the rotating body and applies a first rotational force to the reel rest device;
is located between the rotating body and the disc-shaped part, rotates coaxially with the first rotating body, and has a larger diameter than the second rotating body, thereby providing a fast forwarding or winding force different from the first rotating body. a third rotating body that applies a second rotational force for returning; and a third rotating body disposed on a side surface of the disc-shaped portion and facing the third rotating body,
A slip mechanism comprising a friction body that transmits the rotational force of the first rotary body to the third rotary body, and an elastic body disposed between the second rotary body and the third rotary body. a fourth rotary body to which the rotational force of the second rotary body is transmitted and which can apply the rotational force to the reel rest shaft; and a fourth rotary body to which the rotational force of the third rotary body is transmitted and which can apply the rotational force to the reel rest shaft. a fifth rotary body that can be applied to the rest axis; and a rotation axis of the fourth rotary body, and the fifth rotary body rotates in a plane about the rotation axis of the first rotary body, and rotates in a plane about the rotation axis of the first rotary body. a first control plate that moves the rotation axis of the fifth rotating body in a plane and controls the transmission of rotational force to the reel rest axis; A second rotating body that rotates in a plane about the rotational axis of the first rotating body to move the rotational axis of the fifth rotating body in a plane and controls the transmission of rotational force to the reel rest shaft.
a control board, and when the first control board is in a movable state, the second control board is in an immovable state;
and movement preventing means for rendering the first control plate immovable when the second control plate is movable.